nomadcode/services/core/internal/http/handlers.go
toki 11490df648 chore: import nomadcode-core into services/core
git-subtree-dir: services/core
git-subtree-mainline: 6f5e3a119f
git-subtree-split: 6fdbc73753
2026-05-21 13:35:20 +09:00

137 lines
3.4 KiB
Go

package http
import (
"context"
"encoding/json"
"errors"
"log/slog"
stdhttp "net/http"
"strconv"
"time"
"github.com/go-chi/chi/v5"
"github.com/jackc/pgx/v5"
"github.com/jackc/pgx/v5/pgxpool"
"github.com/nomadcode/nomadcode-core/internal/workflow"
)
type Handler struct {
db *pgxpool.Pool
workflow *workflow.Service
logger *slog.Logger
}
func NewHandler(pool *pgxpool.Pool, workflowService *workflow.Service, logger *slog.Logger) *Handler {
return &Handler{
db: pool,
workflow: workflowService,
logger: logger,
}
}
func (h *Handler) Healthz(w stdhttp.ResponseWriter, r *stdhttp.Request) {
writeJSON(w, stdhttp.StatusOK, map[string]string{"status": "ok"})
}
func (h *Handler) Readyz(w stdhttp.ResponseWriter, r *stdhttp.Request) {
ctx, cancel := context.WithTimeout(r.Context(), readyTimeout)
defer cancel()
if err := h.db.Ping(ctx); err != nil {
writeError(w, stdhttp.StatusServiceUnavailable, "database is not ready")
return
}
writeJSON(w, stdhttp.StatusOK, map[string]string{"status": "ready"})
}
func (h *Handler) CreateTask(w stdhttp.ResponseWriter, r *stdhttp.Request) {
var input workflow.CreateTaskInput
if err := json.NewDecoder(r.Body).Decode(&input); err != nil {
writeError(w, stdhttp.StatusBadRequest, "invalid JSON body")
return
}
task, err := h.workflow.CreateTask(r.Context(), input)
if err != nil {
h.writeServiceError(w, err)
return
}
writeJSON(w, stdhttp.StatusCreated, map[string]string{
"id": task.ID,
"status": task.Status,
})
}
func (h *Handler) GetTask(w stdhttp.ResponseWriter, r *stdhttp.Request) {
task, err := h.workflow.GetTask(r.Context(), chi.URLParam(r, "id"))
if err != nil {
h.writeServiceError(w, err)
return
}
writeJSON(w, stdhttp.StatusOK, task)
}
func (h *Handler) ListTasks(w stdhttp.ResponseWriter, r *stdhttp.Request) {
limit := int32(20)
if rawLimit := r.URL.Query().Get("limit"); rawLimit != "" {
parsed, err := strconv.Atoi(rawLimit)
if err != nil || parsed < 1 {
writeError(w, stdhttp.StatusBadRequest, "limit must be a positive integer")
return
}
limit = int32(parsed)
}
tasks, err := h.workflow.ListTasks(r.Context(), limit)
if err != nil {
h.writeServiceError(w, err)
return
}
writeJSON(w, stdhttp.StatusOK, tasks)
}
func (h *Handler) EnqueueTask(w stdhttp.ResponseWriter, r *stdhttp.Request) {
task, err := h.workflow.EnqueueTask(r.Context(), chi.URLParam(r, "id"))
if err != nil {
h.writeServiceError(w, err)
return
}
writeJSON(w, stdhttp.StatusOK, map[string]string{
"id": task.ID,
"status": task.Status,
})
}
func (h *Handler) writeServiceError(w stdhttp.ResponseWriter, err error) {
switch {
case errors.Is(err, workflow.ErrInvalidTaskInput):
writeError(w, stdhttp.StatusBadRequest, err.Error())
case errors.Is(err, workflow.ErrTaskCannotBeEnqueued):
writeError(w, stdhttp.StatusConflict, err.Error())
case errors.Is(err, pgx.ErrNoRows):
writeError(w, stdhttp.StatusNotFound, "task not found")
default:
if h.logger != nil {
h.logger.Error("request failed", "error", err)
}
writeError(w, stdhttp.StatusInternalServerError, "internal server error")
}
}
const readyTimeout = 2 * time.Second
func writeJSON(w stdhttp.ResponseWriter, status int, value any) {
w.Header().Set("Content-Type", "application/json")
w.WriteHeader(status)
_ = json.NewEncoder(w).Encode(value)
}
func writeError(w stdhttp.ResponseWriter, status int, message string) {
writeJSON(w, status, map[string]string{"error": message})
}